Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Raviteja Theertham"'
Publikováno v:
IEEE Journal of Solid-State Circuits. 57:3418-3428
Autor:
Sharvil Patil, Raviteja Theertham, Hajime Shibata, Victor Kozlov, Asha Ganesan, Efram Burlingame, Zhao Li, Rama Thakar, Qianqian Zhang, Yue Yin, Aathreya Bhat
Publikováno v:
2023 IEEE Custom Integrated Circuits Conference (CICC).
Autor:
Shanthi Pavan, Raviteja Theertham
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 69:1991-1995
High-resolution continuous-time delta-sigma modulators use resistive feedback DACs for low-noise operation. Such DACs have conventionally been switched at the reference end. It turns out that reference-path resistance degrades the performance of thes
Autor:
Wei Shi, Xing Wang, Xiyuan Tang, Abhishek Mukherjee, Raviteja Theertham, Shanthi Pavan, Lu Jie, Nan Sun
Publikováno v:
2022 IEEE Custom Integrated Circuits Conference (CICC).
Publikováno v:
IEEE Journal of Solid-State Circuits. 55:2429-2442
We present design considerations for CT $\!\Delta \!\Sigma $ Ms that attempt to achieve high resolution (16+ bits) over a wide bandwidth (>200 kHz), resulting in a low in-band noise spectral density. The main challenges in such designs are parasitic
Autor:
Raviteja Theertham, Shanthi Pavan
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 66:1618-1622
Element mismatch in the digital-to-analog converter (DAC) of a multibit $\Delta \Sigma $ data-converter greatly degrades the modulator’s in-band performance. One approach to correct these errors is to use an offline calibration method, based on mea
Autor:
Raviteja Theertham, Shanthi Pavan
Publikováno v:
ISCAS
Chopping is an efficient way of mitigating the effect of flicker noise in continuous-time delta-sigma modulators (CT ${\Delta \Sigma }$ Ms). Unfortunately, chopping causes the demodulation of shaped quantization noise into the signal band. Prior work
Publikováno v:
VLSI Circuits
We present a CT$\Delta \Sigma$ M which uses a virtual-ground-switched resistor DAC to achieve low distortion by reducing the effects of inter-symbol interference (ISI), and parasitic resistance in the reference path. $1/ f$ noise is reduced by choppi